tofsee | 389f1cad58921e8267bdd0ae4c3d7007d6f3ac2f2b83360f57f2d1719d4f1072

Analysis

max time kernel
147s
max time network
146s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
27-08-2024 13:41

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General

Target

c51aba749c879901b01541a953fc336e_JaffaCakes118.exe
Size

13.3MB
MD5

c51aba749c879901b01541a953fc336e
SHA1

f50814f5782dfd9b234428d07e687623a68971e3
SHA256

389f1cad58921e8267bdd0ae4c3d7007d6f3ac2f2b83360f57f2d1719d4f1072
SHA512

40e2f62613b368f390ace86f5d83b083e533391b45a6ddc97bb12013f29a2646d2fb2e10c7760132e31d75f457f30559a3179b2fffe1cafa6ba0ba610c6784f6
SSDEEP

49152:AwAKFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFd:Aw

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

defeatwax.ru

refabyd.info

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\lkuvrkoj = "0"	svchost.exe

Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2560	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\lkuvrkoj\ImagePath = "C:\\Windows\\SysWOW64\\lkuvrkoj\\yojvpbfx.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2900	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2176	yojvpbfx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2176 set thread context of 2900	2176	yojvpbfx.exe	43

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
2804	sc.exe
2212	sc.exe
2740	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	yojvpbfx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3048 wrote to memory of 2068	3048	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	30
PID 3048 wrote to memory of 2068	3048	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	30
PID 3048 wrote to memory of 2068	3048	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	30
PID 3048 wrote to memory of 2068	3048	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	30
PID 3048 wrote to memory of 3000	3048	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	32
PID 3048 wrote to memory of 3000	3048	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	32
PID 3048 wrote to memory of 3000	3048	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	32
PID 3048 wrote to memory of 3000	3048	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	32
PID 3048 wrote to memory of 2212	3048	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	34
PID 3048 wrote to memory of 2212	3048	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	34
PID 3048 wrote to memory of 2212	3048	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	34
PID 3048 wrote to memory of 2212	3048	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	34
PID 3048 wrote to memory of 2740	3048	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	36
PID 3048 wrote to memory of 2740	3048	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	36
PID 3048 wrote to memory of 2740	3048	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	36
PID 3048 wrote to memory of 2740	3048	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	36
PID 3048 wrote to memory of 2804	3048	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	38
PID 3048 wrote to memory of 2804	3048	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	38
PID 3048 wrote to memory of 2804	3048	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	38
PID 3048 wrote to memory of 2804	3048	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	38
PID 3048 wrote to memory of 2560	3048	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	41
PID 3048 wrote to memory of 2560	3048	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	41
PID 3048 wrote to memory of 2560	3048	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	41
PID 3048 wrote to memory of 2560	3048	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	41
PID 2176 wrote to memory of 2900	2176	yojvpbfx.exe	43
PID 2176 wrote to memory of 2900	2176	yojvpbfx.exe	43
PID 2176 wrote to memory of 2900	2176	yojvpbfx.exe	43
PID 2176 wrote to memory of 2900	2176	yojvpbfx.exe	43
PID 2176 wrote to memory of 2900	2176	yojvpbfx.exe	43
PID 2176 wrote to memory of 2900	2176	yojvpbfx.exe	43

C:\Users\Admin\AppData\Local\Temp\c51aba749c879901b01541a953fc336e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\c51aba749c879901b01541a953fc336e_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3048
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lkuvrkoj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2068
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yojvpbfx.exe" C:\Windows\SysWOW64\lkuvrkoj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3000
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lkuvrkoj binPath= "C:\Windows\SysWOW64\lkuvrkoj\yojvpbfx.exe /d\"C:\Users\Admin\AppData\Local\Temp\c51aba749c879901b01541a953fc336e_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2212
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lkuvrkoj "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2740
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lkuvrkoj
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2804
- C:\Windows\SysWOW64\netsh.exe
  "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
  2⤵
  - Modifies Windows Firewall
  - Event Triggered Execution: Netsh Helper DLL
  - System Location Discovery: System Language Discovery
  PID:2560

C:\Windows\SysWOW64\lkuvrkoj\yojvpbfx.exe
C:\Windows\SysWOW64\lkuvrkoj\yojvpbfx.exe /d"C:\Users\Admin\AppData\Local\Temp\c51aba749c879901b01541a953fc336e_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2176
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2900

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\yojvpbfx.exe

Filesize
13.9MB

MD5
212f4d3af221d016ad5b169cb5238a84

SHA1
4c1dcecaf700c0c16ed90b64514d5816d738bd7f

SHA256
47329286a3c068baa6f6746ea9ef75c5d44c09ae391e41dd1f41798f1413f1e2

SHA512
f980ed46dffa41f564c235eecaef112b6834d48eb74992b2dbfaef6735e8cf6156021cf757fe3c4aa6770279bb87bdaaa5cbcb40e8f13b0a5dffb3501115ec30

Download Submit
memory/2176-15-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download
memory/2900-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2900-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2900-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2900-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2900-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/3048-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3048-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3048-8-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download
memory/3048-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/3048-1-0x0000000002D20000-0x0000000002E20000-memory.dmp

Filesize
1024KB

Download
memory/3048-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads